/Engine/Source/Editor/UnrealEd/Public/Tools/UEdMode.h
virtual void ActorsDuplicatedNotify ( [TArray](API\Runtime\Core\Containers\TArray)< [AActor](API\Runtime\Engine\GameFramework\AActor) * > & PreDuplicateSelection, [TArray](API\Runtime\Core\Containers\TArray)< [AActor](API\Runtime\Engine\GameFramework\AActor) * > & PostDuplicateSelection, bool bOffsetLocations )